The company Sound Precision has developed a new Line Array loudspeaker system (VHA-40). When using this system, their customers need computer aid to get the best possible sound-quality and control of sound levels for the whole audience. The aim of this thesis is to develop a truly useful sound quality simulator for the VHA-40. The system will help the sound engineers to position the loudspeakers for optimal sound by simulating loudspeaker configurations and visualizing the resulting sound quality and quantity. To solve this a human-centered design (HCD) approach is taken to implement a system that is truly useful for the users, meaning that they will use it more and hence deliver better sound for the audience.

Vi har i detta arbete skapat ett API för widgets på Android och iOS för Visiarcs utvecklingsverktyg CoffeeMaker. CoffeeMaker använder sig av multiplattform-API:t Cocos2dx och försöker, i så stor utsträckning det är möjligt, förhålla sig till det reaktiva programmeringsparadigmet. Vi använde oss av olika designmönster för att jämna ut skillnaderna mellan Android och iOS interface och implementerade funktionalitet för knappar, checkboxes, radioknappar och textfält på dessa två plattformar. Dessa widgets tematiseras enligt ett JSON-liknande format och använder sig av en texturatlas för att spara resurser. Vi behövde en texturpackare som lämpade sig att köras under en applikations initiering och ibland även under själva körningen.

Design Patterns introducerades på 1990-talet och användningen sades medföra en rad fördelar som skulle hjälpa systemutvecklare i deras arbete. Bland annat skulle Design Patterns underlätta för systemutvecklarna att kommunicera med varandra samt ge en bättre överblick över och förståelse för systemarkitektur genom en höjd abstraktionsnivå. Systemutvecklaren skulle även få en ökad förståelse för god design. Två kritiska artiklar fick oss att vilja beskriva hur systemutvecklare som aktivt arbetar med Design Patterns upplever att centrala fördelar uppfylls. Vi genomförde fyra fallstudier där vi intervjuade erfarna systemutvecklare och vår slutsats är att de upplever att fördelarna med Design Patterns uppfylls.

The flow of information in road vehicles intensifies as new techniques develop. Informationsources such as cell phones, navigation equipment and radios demand the driver?s attentionwhile he or she must stay focused on the road to perform a safe driving. Today the visualinformation inside the vehicle is mostly located on the dashboard, which forces the driver tolook down when shifting attention between the environment outside and the informationinside the vehicle. One way to avoid this is to useHead-up Display (HUD), a technique thatprojects information in the visual field of the user.This master thesis has been performed in cooperation with Scania CV AB, a world leadingtruck producer.

The final thesis named Tracking in Sensor Networks was created by the company Instrument control Sweden. The thesis work is to create a plug-in to an already developed software pro- gram, SkyView. Via the software program one should be able to control an IP-camera from AXIS, model 215 PTZ, with the appropriate protocol over a network.  An Application Programming Interface, API, was used to easily control the camera through SkyView. The interface is called VAPIX and is used to all cameras from AXIS.

AbstractTitle: The first thing I do when I wake up is to log on to Facebook. A study regarding how users of Social Networks experiences the User Generated production. (Det första jag gör när jag vaknar är att logga in på Facebook. En studie om hur användare av de sociala nätverken upplever den användargenererande produktionen.)Number of pages: 37 (39 including enclosures) Author: Per MagnussonTutor: Christian ChristensenCourse: Media and Communication Studies CPeriod: Fall semester 2010University: Division of Media and Communication, Department of Information Science, Uppsala UniversityAim: The ambition with this essay is to examine how the online users of social networks experience the development of the Internet towards Web 2.0, and the enormous User Generated Content emerging from it. How do we receive User Generated Content from other people, and particularly what do we think about our own production.Material/Method: In order to obtain a deeper understanding of the attitudes and perceptions amongst people regarding this subject I used qualitative interviews with 9 people.

The purpose of this thesis is to get an improved understanding of what the bases for relevance are, when people in real information need situations make relevance judgements. In order to meet this purpose, an investigation based on research literature is performed. Four types of relevance are investigated: topical or subject relevance, cognitive relevance or pertinence, situational relevance or utility, and socio-cognitive relevance. The investigation also deals with users relevance criteria identified in fourteen empirical studies, in which the users are adults and engaged in oral, textual, and multimedia information retrieval. Finally, the connections between the user criteria found and the types of relevance are discussed.

A current issue today is to try to implement creative design as a way to solve wicked problems in scientific contexts such as HCI. Since the problems are wicked, they have no given solution which makes the traditional methods inadequate. In these cases, creative design can be an alternative. Creative design is not used in scientific contexts because it is viewed as something unaccountable.In this essay we argue that creative design not necessarily have to be unaccounted. We discuss various views of creative design and translate theory to a practical context.

The aim of this essay is to examine three separate Swedish public libraries and their respective websites on the grounds of the usability sciences. I firstly had to summarize the main properties of the usability-field in order to gain an extended knowledge of its purposes and possible usage for today?s library systems. I was then able to apply the extended knowledge in the examination of the three library websites and the purpose of determining whether or not they were designed according to the standards set by the usability-sciences.Usability is a rather new science that deals with the dissection and examination of computer-based systems, in order to find the key components that make systems user-friendlier. With user needs being the main focus of its research, usability tries to meet all the different needs of the modern user and construct systems that are less system-centered and more user-centered.

Choosing the right user experience evaluation method can be difficult, choosing the right one for mobile user experience can be even more so. One major cause is that mobile usage is context dependent. Another contributing factor is that there is not one widely adopted theory or framework for user experience due to its complexity.The purpose of this study was to evaluate an existing method artifact in its feasibility for evaluating mobile applications. The chosen method, AttrakDiff2 is a self-reporting semantic differential questionnaire to evaluate the user experience of an interactive product, based on its hedonic and pragmatic qualities.A study was conducted where the participants assessed one mobile and one web application, which were later rated with AttrakDiff2. The completion of the questionnaire was conducted as a think-aloud session subsequently followed by an interview.The results suggest that the participants experience was affected more by the evaluated application style than the different platforms.

When traffic in large cities increases, it becomes more vulnerable to disturbances such as accidents, stalled vehicles or construction; therefore, traffic jams are more likely to occur. For better control of the traffic at a disturbance the Swedish National Road Administration (SNRA) has traffic equipment which can be controlled from a command centre. This traffic equipment consists of gates and signs with variable messages. This report will discuss the system used for traffic control in Stockholm. It will present proposals designed to improve it.

I denna uppsats beskrivs gränssnittsproblematiken i dagens webbläsare. Syftet är att undersöka om användargränssnittet i webbläsaren hämmar användarna till att sätta sina individuellt anpassade säkerhetsinställningar. En stor del vardagliga sysslor utförs via webbläsaren, exempelvis hantera bankärenden eller ladda upp bilder på sociala medier. Därför finns det ett behov av att webbläsarens gränssnitt kommunicerar olika säkerhetsnivåer och inställningar så att alla användare kan använda och förstå de inställningar som erbjuds. Med hjälp av teoretiska utgångspunkter söker vi svar på eventuella brister i webbläsaren med hjälp av användarstudier.

This thesis of 15 hp has been implemented at Halmstad University, in collaboration with Saab Dynamics in Linköping. Saab Dynamics is a company operating in the defence industry where competition is tough. This necessitates new ways to increase efficiency in the company, which is the basis for this thesis. Saab Dynamics wants to introduce simulation driven design. Since Saab Dynamics engineers have little experience of simulation, required a user methodology with clear guidelines.

The aim of this Master's thesis is to examine the user discourses that can be identified in the public library field. Questions posed in this study are: what discourses can be found, what characterises them, how are users categorised and what does this categorisation imply. The theoretical starting-point is Ernesto Laclaus and Chantal Mouffes discourse theory. The method is text analytic. 62 articles from three library journals - Biblioteksbladet, Bibliotek i Samhälle and Ikoner are analysed through a model in four phases.

During the past decade, consumer health information-centers have been developed at the hospital libraries in Sweden in order to meet the increasing demand from patients and their relatives concerning consumer health information. In 1993, the hospital libraries in Falun, Västervik and Karlstad launched a consumer health information database called PION. The aim of this Master's thesis is two-fold. My first aim is to describe and discuss the principles of user-oriented evaluation. In my attempt to convey the theoretical discussion into the everyday life of librarianship, my second and most important aim is to conduct a user-oriented evaluation of the database PION.